【摘要】 采用有限元程序对包西铁路跨黄延高速大桥梁拱组合体系进行空间受力分析,分析在设计荷载下的受力特性,并对成桥进行静载与动载试验。结果表明,梁拱组合体系实际受力与设计吻合较好,拱肋及梁体的实测应力值及挠度值相对较小,结构安全储备较大,动力测试结果表明梁拱组合体系动力特性良好。更多还原

【Abstract】 Finite element program is applied to analyse the space mechanical behavior of beam-arch composite railway bridge of BaoTou-Xi’an railway bridge which spans the HuangYan highway.The static text and dynamic test are conducted to reveal the mechanical characteristics of this bridge.Result shows that the actual mechanical behavior of the composite beam-arch bridge agrees quite well with the design.The stress and deflection of the arch rib and beam are relatively small and the structural safety margin is large.The dynamical text shows that the arch-beam composite railway bridge has good dynamic characteristics.更多还原